CNMG 120412 T9235 Wendeplatten - Tungaloy

Take advantage of the combination of CVD-coated carbide in T9235 grade, ISO-standard CNMG geometry and a 1.2 mm corner radius for reliable performance in unstable turning conditions; order the insert directly via Metav Werkzeuge or request technical advice from the consultants.

CNMG 120412 T9235 – Tungaloy turning insert for external and internal turning

The CNMG120412 rhombic ISO turning insert, CVD-coated and designed for steel machining, is intended for external and internal turning where interrupted cuts or unstable conditions demand a tough edge.

• ISO rhombic insert, 80° cutting geometry
• CVD-coated carbide grade T9235
• Double-sided chipbreaker for interrupted cuts
• 1.2 mm corner radius for robust edge

Durable cutting performance for demanding turning operations

The CVD-coated carbide composition and T9235 grade deliver a wear-resistant cutting edge that is particularly suited to steel applications at moderate cutting speeds. The coating improves thermal stability and helps preserve the edge during interrupted cuts, while the substrate offers toughness where vibrations or variable clamping reduce process stability. This combination results in more consistent tool life and fewer unplanned insert changes, supporting a steady production rhythm and predictable throughput.

Compatibility and easy integration into existing tool systems

Compatibility with tool holders depends on the insert form, relief angle, tolerance class, fastening method, size and thickness; these parameters are standardised for ISO turning plates. The rhombic 80° geometry and 0° relief allow straightforward mounting in common external and internal holders, while the cylindrical hole provides secure clamping. Clear specification of the insert designation and holder type avoids mismatches and reduces setup time, helping to maintain cycle-time targets on both small-batch and series production.

Chip control and edge security under intermittent cutting

The double-sided chipbreaker design supports effective chip formation for a wide range of linear feeds and depth of cut choices, lowering the risk of chip-related surface damage and tool pressure spikes. The 1.2 mm corner radius balances edge strength with acceptable surface finish, giving a robust edge that tolerates entry impacts and fluctuations in material hardness. For operations requiring increased edge security, the insert’s geometry and chipformer reduce the likelihood of premature chipping, improving process reliability.

Choosing the right grade and what it means for productivity

The Tungaloy T9235 grade is a CVD-coated carbide formulated as a tougher solution for steel machining where tooling must resist breakage during unstable conditions or interrupted operations. Selecting this grade over a harder, more brittle alternative trades some high-speed wear resistance for better fracture tolerance and longer useful life in adverse conditions. This pragmatic choice often reduces downtime and tooling turnover in mixed or unpredictable production environments, improving overall machining economy.

Contact Metav Werkzeuge for specification matching, availability and batch supply of the Tungaloy CNMG120412 T9235 turning insert; email info@metav-werkzeuge.com or call +49 2822 7131930 for fast technical advice and ordering

Technical data

• Article number: 6785820
• Manufacturer SKU: TUN6785820
• SKU: 6785820-Tungaloy
• Model series: ISO turning inserts
• Material: Carbide
• Designation: CNMG120412
• Grade: T9235
• Manufacturer: Tungaloy

Facts

• Insert size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 1.2 mm
• Included angle: 80°
• Relief angle: 0°

Special features

• CVD-coated carbide (T9235)
• Double-sided chipbreaker
• Rhombic plate form
• Cylindrical hole (with hole)
• ISO-standard turning insert
• Suited for steel, lower cutting speeds, unstable and interrupted cuts
• Compatibility determined by form, relief angle, tolerance class, fastening, size and thickness

FAQ

What materials is this insert best suited for?
The Tungaloy CNMG120412 T9235 insert is optimised for steel machining and performs well in applications with interrupted cuts or reduced process stability.

Is the insert reversible or single-use per edge?
This CNMG insert is double-sided and can be indexed to provide two cutting edges per side, prolonging usable life before disposal.

Which holder types are compatible with the CNMG120412 geometry?
Compatibility depends on holder form and tolerance; the rhombic 80° geometry and cylindrical hole make it compatible with many ISO external and internal turning holders designed for CNMG plates.

How does the T9235 grade differ from harder coatings for finishing?
T9235 is a tougher CVD-coated carbide aimed at fracture resistance under variable conditions, whereas harder coatings prioritise wear resistance at high cutting speeds and stable setups.

What benefit does the 1.2 mm corner radius provide?
The 1.2 mm corner radius enhances edge robustness against impacts and interruptions, reducing the chance of chipping while maintaining an acceptable surface finish.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from the manufacturer.